#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
using namespace std;

const int N = 1e6 + 10, INF = 0x3f3f3f3f;

void solve()
{
    int n, m;
    while (cin >> n >> m)
    {
        int r, c, v;
        cin >> r >> c >> v;
        int mi = r * c - 1, ma = (n - r + 1) * (m - c + 1) - 1;
        if (mi <= v - 1 && ma <= n * m - v) {
            cout << "Yes\n";
        } else
            cout << "No\n";
    }

}

signed main()
{
    //ios::sync_with_stdio(0);
    //cin.tie(0);cout.tie(0);
// #define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    std::istringstream in(R"()");
    std::cin.rdbuf(in.rdbuf());
#endif
    int T = 1;
    //cin>>T;
    for (int i = 1;i <= T;i++) {
        solve();
    }
}